Manufacture of fire retardant foams

Details Manufacture of fire retardant foams Manufacture of fire retardant foams

1990-10-09

1993-01-05

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 54, 5211091, 528 66, 528 67, 428247, C08G 1800

Patent

active

051771187

ABSTRACT:
The invention provides a process for the manufacture of polymeric foams by reacting at least one isocyanate-containing component and water, in which process the isocyanate-containing component comprises a dispersion of a solid fire retardant additive in a liquid isocyanate prepolymer having a free NCO content between 2 and 15% by weight.
The invention also provides new fire retardant compositions comprising a dispersion of a solid fire retardant in liquid isocyanate-containing prepolymer compositions based on a diphenylmethane diisocyanate component and a polyol component.

REFERENCES:
patent: 3726835 (1973-04-01), Bertozzi et al.
patent: 4093759 (1978-06-01), Otsuki et al.
patent: 4365025 (1982-12-01), Murch et al.
patent: 4910231 (1990-03-01), Pham et al.

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